Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
Upward transport of iron at the west shelf edge-slope of the Okinawa Trough in the East China Sea
Title: | Upward transport of iron at the west shelf edge-slope of the Okinawa Trough in the East China Sea |
Authors: | Sasayama, Ryohei Browse this author | Hioki, Nanako Browse this author | Morita, Yuichiroh Browse this author | Isoda, Yutaka Browse this author →KAKEN DB | Imai, Keiri Browse this author | Ooki, Atsushi Browse this author →KAKEN DB | Kuma, Kenshi Browse this author →KAKEN DB |
Keywords: | Iron supply | Chemical substances | Hydrographic data | Upwelling | Resuspension of sediments | Shelf break | Continental slope | Kuroshio | Okinawa Trough | East China Sea |
Issue Date: | Aug-2018 |
Publisher: | Springer |
Journal Title: | Journal of oceanography |
Volume: | 74 |
Issue: | 4 |
Start Page: | 367 |
End Page: | 379 |
Publisher DOI: | 10.1007/s10872-018-0468-y |
Abstract: | We studied the behavior of chemical substances in the upper 300 m of the water column across the continental shelf-slope interface in the East China Sea off the Okinawa Trough. The behaviors of iron, inorganic nutrients, and humic-like fluorescent dissolved organic matter were strongly influenced by the extensive water exchange between the East China Sea and the Kuroshio Current across the shelf break and slope via upwelling and frontal processes. We attributed the high humic-like fluorescent intensity at the subsurface of the shelf break and slope regions to the lateral supply of humic-like fluorescent dissolved organic matter from the shelf sediments to the outer shelf region due to the intrusion of shelf water into Kuroshio subsurface water. We found that the behavior of iron at the continental shelf-slope was remarkably different from the conservative mixing of inorganic nutrients and humic-like fluorescent dissolved organic matter. In deep and bottom waters at the shelf-slope, high total iron concentrations, which were closely related to water transmittance, possibly resulted from the swept transport of iron-rich resuspended sediments over the shelf floor from the slope by the invading Kuroshio Intermediate Water close to the bottom. |
Rights: | The final publication is available at link.springer.com |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/75068 |
Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 久万 健志
|